Elements of Phonological Interventions for Children With Speech Sound Disorders: The Development of a Taxonomy.

Purpose: Our aim was to develop a taxonomy of elements comprising phonological interventions for children with speech sound disorders. Method: We conducted a content analysis of 15 empirically supported phonological interventions to identify and describe intervention elements. Measures of element concentration, flexibility, and distinctiveness were used to compare and contrast interventions. Results: Seventy-two intervention elements were identified using a content analysis of intervention descriptions then arranged to form the Phonological Intervention Taxonomy: a hierarchical framework comprising 4 domains, 15 categories, and 9 subcategories. Across interventions, mean element concentration (number of required or optional elements) was 45, with a range of 27 to 59 elements. Mean flexibility of interventions (percentage of elements considered optional out of all elements included in the intervention) was 44%, with a range of 29% to 62%. Distinctiveness of interventions (percentage of an intervention's rare elements and omitted common elements out of all elements included in the intervention [both optional and required]) ranged from 0% to 30%. Conclusions: An understanding of the elements that comprise interventions and a taxonomy that describes their structural relationships can provide insight into similarities and differences between interventions, help in the identification of elements that drive treatment effects, and facilitate faithful implementation or intervention modification. Research is needed to distil active elements and identify strategies that best facilitate replication and implementation.

A systematic review and classification of interventions for speech-sound disorder in preschool children.

BACKGROUND: Multiple interventions have been developed to address speech sound disorder (SSD) in children. Many of these have been evaluated but the evidence for these has not been considered within a model which categorizes types of intervention. The opportunity to carry out a systematic review of interventions for SSD arose as part of a larger scale study of interventions for primary speech and language impairment in preschool children. AIMS: To review systematically the evidence for interventions for SSD in preschool children and to categorize them within a classification of interventions for SSD. METHODS & PROCEDURES: Relevant search terms were used to identify intervention studies published up to 2012, with the following inclusion criteria: participants were aged between 2 years and 5 years, 11 months; they exhibited speech, language and communication needs; and a primary outcome measure of speech was used. Studies that met inclusion criteria were quality appraised using the single case experimental design (SCED) or PEDro-P, depending on their methodology. Those judged to be high quality were classified according to the primary focus of intervention. OUTCOMES & RESULTS: The final review included 26 studies. Case series was the most common research design. Categorization to the classification system for interventions showed that cognitive-linguistic and production approaches to intervention were the most frequently reported. The highest graded evidence was for three studies within the auditory-perceptual and integrated categories. CONCLUSIONS & IMPLICATIONS: The evidence for intervention for preschool children with SSD is focused on seven out of 11 subcategories of interventions. Although all the studies included in the review were good quality as defined by quality appraisal checklists, they mostly represented lower-graded evidence. Higher-graded studies are needed to understand clearly the strength of evidence for different interventions.

The relation between therapy intensity and outcomes of rehabilitation in skilled nursing facilities.

OBJECTIVE: To examine the relation between therapy intensity, including physical therapy (PT), occupational therapy (OT), and speech and language therapy (SLT), provided in a skilled nursing facility (SNF) setting and patients' outcomes as measured by length of stay (LOS) and stage of functional independence as measured by the FIM instrument. DESIGN: A retrospective analysis of secondary data from an administrative dataset compiled and owned by SeniorMetrix Inc. SETTING: Seventy SNFs under contract with SeniorMetrix health plan clients. PARTICIPANTS: Patients with stroke, orthopedic conditions, and cardiovascular and pulmonary conditions (N=4988) covered by Medicare+Choice plans, and admitted to an SNF in 2002. INTERVENTIONS: Not applicable. MAIN OUTCOMES MEASURES: LOS and improvement in stage of independence in the mobility, activities of daily living (ADLs), and executive control domains of function as determined by the FIM instrument. RESULTS: Higher therapy intensity was associated with shorter LOS ( P <.05). Higher PT and OT intensities were associated with greater odds of improving by at least 1 stage in mobility and ADL functional independence across each condition ( P <.05). The OT intensity was associated with an improved executive control stage for patients with stroke, and PT and OT intensities were associated with improved executive control stage for patients with cardiovascular and pulmonary conditions ( P <.05). The SLT intensity was associated with improved motor and executive control functional stages for patients with stroke ( P <.05). Therapy intensities accounted for small proportions of model variances in all outcomes. CONCLUSIONS: Higher therapy intensity was associated with better outcomes as they relate to LOS and functional improvement for patients who have stroke, orthopedic conditions, and cardiovascular and pulmonary conditions and are receiving rehabilitation in the SNF setting.

Towards a common neural substrate in the immediate and effective inhibition of stuttering.

Stuttering can be effectively inhibited via exogenous sensory signals (e.g., speaking in unison or using altered auditory feedback) or by using endogenous motoric strategies (e.g., singing or therapeutically implementing long vowel prolongations to reduce speech rates). We propose that these channels, which superficially appear to be diametrically opposite, centrally converge in the engagement of mirror neurons for fluent gestural productions. Sensory changes incurred via exogenous speech signals allow for direct engagement of mirror systems, while endogenous motor strategies appear to require significant departures from normal speech production (e.g., highly unnatural or droned speech) to engage mirror systems. Thus, paradoxically, stuttering is prone to resurface during attempts to impose naturalness upon therapeutic speech.

Effects of intensive voice treatment (the Lee Silverman Voice Treatment [LSVT]) on ataxic dysarthria: a case study.

This study examined the effects of intensive voice treatment (the Lee Silverman Voice Treatment [LSVT]) on ataxic dysarthria in a woman with cerebellar dysfunction secondary to thiamine deficiency. Perceptual and acoustic measures were made on speech samples recorded just before the LSVT program was administered, immediately after it was administered, and at 9 months follow-up. Results indicate short- and long-term improvement in phonatory and articulatory functions, speech intelligibility, and overall communication and job-related activity following LSVT. This study's findings provide initial support for the application of LSVT to the treatment of speech disorders accompanying ataxic dysarthria. Potential neural mechanisms that may underlie the effects of loud phonation and LSVT are addressed.